Incandescent gas-burner.



PATENTED DEC. 22, 1903.

} L. R. HOPTON. INGANDESCENT GAS BURNER.

APPLIOATION FILED APR. 20, 1903.

Ho MODEL.

. IN VE N TOR lemezfifi m;

WITNESSES.

' A TTOHME r- J THE NORRIS PETERS co, PHOTO-LUNG WASKINGTON, D. c

UNITED STATES Patented December 22, 1903.

PATENT OFFICE.

LEMUEL R. HOPTON, OF NEW YORK, N. Y., ASSIGNOR TO THE OXLEY ENOSCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

INCANDESCENAT GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 747,550, dated December22, 1903.

Application filed April 20, 1903. Serial No. 153,352. (No model.)

a long and comparatively unimpeded path for the mixture of gas and airbefore it reaches a point, which is termed the burner-head,

' at which the inflammable mixture is allowed to expand as it becomesheated, and thus fiow to the flame with a decreased velocity in order toefiect a more perfect combustion. 'I

have found that better results are obtained ifthe mixing-tube and theburner-head are protected against changes of temperature.

It is therefore my purpose to prevent undue changes in temperature inthe parts and also to construct the burner about the air-inlets in sucha manner that the inlets are protected against the entrance of foreignparticles and are also protected from drafts, which might otherwiseinterfere with the economical and uniform operation of the burner.

The mechanical construction of the parts is such that the burner may beeconomically manufactured and readily assembled. The parts also are sorelated to one another that they can be all readily dismembered'andparts.

interchanged or removed or replaced, as desired.

The construction is more fully seen in the accompanying drawings and bya reading of.

the following specification.

Figure 1 is a plan view showingthe top of the gas-burnerandincandescent-mantle support. Fig. 2 is a side elevation of the burner--tube and the burner-head and showing the protective covering for thebase of the burner and the mixing-tube and head in cross-section. Fig. 3is a plan view of the support for the burner, the mixing-tube beingshown in cross-section and the protective covering re moved.

1 is a nipple of suitable-construction for attaching the burner to abracket, chandelier, or other gas-supply.

2 is an extension-pipe from the nipple extending upward to the inletmember 3. This member 3 is provided with a suitable form of gas-inletregulator 4 and with air-inlets 5.

6 is a cup-shaped member which surrounds the extension-pipe 2 and inletmember 3 and extends upward, substantially as shown, above the base ofthe burner-tube.

7 is a platform which is situated in the in terior of the cup member 6and is preferably in the form of the frustum of a cone, which issupported by the interior of the cup.

8 8 are a series of holes or perforations in the platform 7 for thepurpose of admitting air to the burner.

9 is the main tube or mixing-tube of the burner forming a mixing-chamberfor the air and gas.

l0 isa protecting shield or casing which surrounds the mixing-tube 9 andis supported inside the cup 6, there preferably being a raised portion11 of the platform 7 for the purpose of more securely holding the casing10 in place.

12 is the burner-head, which is of a suitable construction and of alarger diameter than the mixing-tube 9.

The casing 10 extends upward, so as to.surround not only the mixing-tube9, but the bnrnerrhead 12 as well,fittingclose to the head, but leavingan air-space around the tube. The platform 7 preferably closes thebottom of the casing 10, so that no air can pass upward between thecasing and the mixing tube 9. This casing 10 is constructed, preferably,of an insulating or non-thermal conducting material, such as porcelainor glass.

13 is a cap which fits down upon the top of the burner-head 12 and isprovided with a gauze 14. o

15 is a mantle of suitable construction for the purpose ofincandescence.

16 is an annular collar which fits onto the top of the casing 10 andcarries the mantle:

supporting rod 17, there being an adjusting screw 18 for the purpose ofholding the latter in place. It will be noted that the mantlesupportingcollar 16 rests upon the upper end of the casing 10. This is thepreferred construction. The inner diameter of the upper end of thecasing 10 is larger than the outer diameter of the cap 13, so that thecasing 10 may be readily removed by merely lifting it from its supporton the platform 7. In the assembling of the parts the operation isobviously merely the reverse.

The operation will be understood from an examination of the drawings, inwhich it will be seen that the air enters through the perforations inthe platform 7, being deflected downward by the interior surface of thecupshaped member 6. As the air has considerable velocity as it entersthrough these openings, any foreign particles will be thrown downwardand caught in the bottom of the cup, where they may be held to beremoved afterward when desired. After the air has been deflecteddownward it passes through the air-inlets 5 as it is drawn in by the gaspassingthrough the gas-inlet 4 and thence up into the mixing-tube 9,where the mixture is effected. From thence the mixture flows into theexpansion-chamber 12 of the burnerhead and from thence through the gauzecovering 14 to the mantle. The construction will therefore be seen to besimple, of few parts, and nevertheless such as to give an effective andsatisfactoryoperation. The burner-tube, which includes the member 2,inlet member 3, and mixing-tube 9, is protected from any change intemperature due to external causes. The burner-head 12 is also in likemanner protected, except that there is little, if any, air-space betweenit and the casing. The principal protection is afforded by thenonconducting casing 10.

What I claim is- 1. An incandescent gas-burner comprising an inletmember having passages for the admission of gas and of air, amixing-tubesecured to the inlet member, a burner-head at the other endof said tube, a casing surrounding the mixing-tube and the burner-head,and a cup-shaped member surrounding the inlet member and the lower endof the casing.

2. An incandescent gas-burner including a burner-tube having gas and airinlets and a mixing-chamber, a burner-head attached thereto, a glasscasing surrounding the mixing-chamber of the burner-tube and theburner-head and a cup member surrounding the lower end of theburner-tube and the casing and a mantle-support carried by the upper endof the casing.

3. An incandescent gas-burner comprising a burner-tube with airand gasinlets,a burnerhead, a cylindrical casin g surroundinga large part ofthe burner-tube and the head and of greater diameter than either thetube or the head, and a cup member centered and supported around thelower end of the tube and providing a support for the casing.

4. An incandescent gasburner including a burnertube having air and gasinlets, a cap at the upper end of larger diameter, a cup surrounding thelower end of the burnertube, a casing surrounding a large part of theburner-tube and supported in the cup said casing being of largerinternal diameter than the greatest diameter of the tube or cap so thatthe casing may be removed without removing the cap.

5. An incandescent gas-burner comprising a burner-tube having air andgas inlets and a mixing -chamber, a cup surrounding the lower portion ofthe same, a casing supported within the cup and extending upward andaround the mixing-chamber, and a mantlesupport carried by the upper endof the easing, the casing and mantle-support being freely removable overthe upper end of the tube. v

6. An incandescent gas burner including a burnertube having gas and airinlets, a cup surrounding the lower end of the tube, a platformsupported by the cup having perforations therein above the air-inlets inthe burner-tube, and a casing supported by the platform and surroundingthe greater part of the burner-tube but freely removable over the upperend thereof.

7. An incandescent gas burner including a burnertube having gas and airinlets, a cup surrounding the lower end of the tube, a platformsupported by the cup having perforations therein above the air-inlets inthe burner-tube, a casing supported by the platform and surrounding alarge part of the burnertube but freely removable over the upper endthereof, and a mantle -support carried by said casing.

8. An incandescent gas burner including a burner-tube having gas and airinlets near the base thereof and a mixing-chamber above, asupportingplatform centered by the tube and supported thereby, and acasing supported by the platform or frame and surrounding themixing-chamber of the burnertube leaving an air-space between the tubeand the inside of the casing.

LEMUEL R. HOPTON. Witnesses:

ROBT. S. ALLYN, L. VREELAND.

